because sometimes you're just proud of your kid.
you're not trying to brag or say 'my kid did this because I'm an awesome parent'.
you're just proud of your kid.

and people want to be offended about everything.

I get braggable stuff. I can understand that! But making your 2 month old CIO isn't worth bragging about. Neither is letting his 8 year old sister hold him in the moving car! Can you tell I've now hidden someone from my feed?